From: bugzilla-daemon@freedesktop.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 107459] Atomically set gamma ramps are not applied until TTY switch
Date: Thu, 02 Aug 2018 18:54:13 +0000 [thread overview]
Message-ID: <bug-107459-502@http.bugs.freedesktop.org/> (raw)
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https://bugs.freedesktop.org/show_bug.cgi?id=107459
Bug ID: 107459
Summary: Atomically set gamma ramps are not applied until TTY
switch
Product: DRI
Version: unspecified
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: DRM/AMDgpu
Assignee: dri-devel@lists.freedesktop.org
Reporter: sir@cmpwn.com
When atomically setting gamma ramps on AMDGPU (specifically ), the changes
don't take effect until switching to another TTY and back again. Using the
legacy DRM interface works as expected.
To reproduce, build and run the rootston Wayland compositor:
https://github.com/swaywm/wlroots
We will shortly be merging this patch for a new gamma control protocol
extension, which you will need to apply if we haven't merged it by the time you
attempt it:
https://github.com/swaywm/wlroots/pull/1157
An sample program will be available in the build directory,
./examples/gamma-control, which can adjust gamma. By default this will use the
atomic interface, set WLR_DRM_NO_ATOMIC=1 before starting rootston to use the
legacy interface. Our atomic gamma code is here:
https://github.com/swaywm/wlroots/blob/master/backend/drm/atomic.c#L199-L230
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next reply other threads:[~2018-08-02 18:54 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-02 18:54 bugzilla-daemon [this message]
2018-08-02 18:55 ` [Bug 107459] Atomically set gamma ramps are not applied until TTY switch bugzilla-daemon
2018-08-03 7:36 ` bugzilla-daemon
2018-08-05 13:58 ` bugzilla-daemon
2018-08-06 9:02 ` bugzilla-daemon
2018-08-06 12:32 ` bugzilla-daemon
2018-08-14 11:14 ` bugzilla-daemon
2019-06-11 5:53 ` bugzilla-daemon
2019-08-16 12:34 ` bugzilla-daemon
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